EP4080079A2 - Braking device - Google Patents

Abstract

The present invention relates to braking equipment for braking a first wheel and a second wheel of a vehicle with at least two lanes, with two brake caliper halves (3) movable in relation to one another and means for actuating them. One object of the invention is to provide components for an overrun brake that are particularly suitable for retrofitting/equipping bicycle trailers. This object is achieved according to the invention in that one side of one of the two brake caliper halves is designed to be guided around the first wheel or around a brake disc (2) arranged on the first wheel and towards an outside of a rim or the brake disc of a first wheel act, and the other side of one brake caliper half is designed as a tappet and arranged to act on an inside of a rim or a brake disc of a second wheel, and that one side of the other of the two brake caliper halves is designed to move around the second wheel or around to be guided around a brake disc arranged thereon and to act on an outside of a rim or brake disc of the second wheel, and the other side of the other brake caliper half is constructed as a tappet and arranged to act on the inside of a rim or brake disc of the first wheel, so that each brake caliper half acts on both wheels or their brake discs (2) at the same time can work. The object is also achieved with brake equipment for an overrun brake for a trailer with a drawbar, in particular for a bicycle trailer, in the form of a rocker apparatus (7) as a connecting link between the drawbar (8) and the trailer, which is characterized by a to be connected to the trailer Swing arm plate (15) and a movable drawbar mount that can be connected to the drawbar (8), the swing arm plate (15) and the drawbar mount being coupled via connecting rods (18) in such a way that the drawbar (8) can be moved axially with respect to the swing arm plate (15). , and that an overrun brake can be triggered pneumatically, hydraulically or electromechanically by an axial displacement of the drawbar to the rocker plate (15, 16) by a cable pull.

Description

The present invention relates to braking equipment according to the preamble of claim 1 and the preamble of claim 9, respectively.

There is a large number of bicycle trailers available on the market, some of which have great transport potential. The vast majority of these trailers do not have an effective service brake when used on a bicycle, which is why the maximum permissible total mass is 40 kg due to the restriction imposed by the Road Traffic Act. As hand-operated transport carts, many such devices are designed by the manufacturer for total weights of up to 200 kg. It follows that without suitable braking equipment, the transport potential of these vehicles as bicycle trailers cannot be fully exploited. Although there are a few manufacturers on the market who offer braked bicycle trailers, this braking equipment is not intended to be installed on a large number of different unbraked bicycle trailers available on the market. Manufacturers of trailers with brakes usually install their own overrun brake mechanism in combination with brake bodies from the wide range of industrially manufactured mass-produced goods.

The retrofitting of existing bicycle trailers without brakes with such systems is associated with a considerable effort if each assembly point, which is required for each brake body and for the required drawbar apparatus for brake actuation, if the solution to an overrun brake is sought, with components and reinforcements that are constructive are up to the task, must be strengthened. However, it makes sense to reduce the necessary modifications to the trailer to be equipped to a minimum, so that even the experienced layman without workshop equipment is able to fit his trailer with an overrun brake.

In order to do justice to this purpose, the attachment kit shown below for an overrun brake with a swing arm for the drawbar for mounting on bicycle trailers has been developed, the significant innovations of which represent a new way of actuating both rim brakes and disc brakes by means of a new swing arm and new brake calipers and which is connected to the bicycle trailer as an assembly unit at just a few attachment points.

It's already after DE 1 434 668 a brake arrangement for bicycle trailers has become known, which is connected via a two-armed lever pivotably arranged on a trailer drawbar via a leg to a Bowden cable which acts on brake shoes. The disadvantage here is that no complete assembly can be used on a mounting plate.

Even after DE 20105 957 U1 an arrangement is proposed which is designed as a transport device for hand truck operation or for trailer operation of bicycles. Here, an overrun brake on the trailer hitch is connected to a braking device on the wheels, which can be actuated by means of a cable pull or linkage, the brake acting as a drum brake on both wheels.

An object of the invention is to provide components for an overrun brake. In a particular embodiment of the invention, the components should be available in particular for retrofitting/equipping existing bicycle trailers, without the basic construction of the bicycle trailer being interfered with by drilling, sawing or welding, but simply a complete assembly using clamping devices or fastening clamps that are easy to attach A mounting plate is attached to the chassis, which is usually designed as a tubular frame.

The object is achieved with brake equipment having the features of claim 1 and with brake equipment having the features of claim 9 . Further preferred embodiments of the invention result from the dependent claims or from the figures, in which preferred exemplary embodiments of the invention are shown, which are explained in more detail below.

Fig. 1:

eine schematische Draufsicht einer erfindungsgemäßen, in einen Fahrradanhänger eingebauten Bremsausrüstung;

Fig. 2:

eine schematische Vorderansicht der in Figur 1 dargestellten Bremsausrüstung;

Fig. 3:

eine erste Detailansicht der in Figur 1 dargestellten Bremsausrüstung;

Fig. 4:

eine zweite Detailansicht der in Figur 1 dargestellten Bremsausrüstung;

Fig. 5:

eine dritte Detailansicht der in Figur 1 dargestellten Bremsausrüstung;

Fig. 6:

eine schematische Vorderansicht des erfindungsgemäßen Schwingenapparates;

Fig. 7:

eine schematische Seitenansicht des in Figur 6 dargestellten Schwingenapparates;

Fig. 8:

eine schematische Draufsicht des in Figur 6 dargestellten Schwingenapparates;

Fig. 9:

eine schematische Aufsicht auf ein Detail einer weiteren Ausführungsform des erfindungsgemäßen Schwingenapparates mit einer Montageplatte.

Show it

Figure 1:

a schematic plan view of a braking equipment according to the invention installed in a bicycle trailer;

Figure 2:

a schematic front view of in figure 1 brake equipment shown;

Figure 3:

a first detailed view of the in figure 1 brake equipment shown;

Figure 4:

a second detailed view of the in figure 1 brake equipment shown;

Figure 5:

a third detailed view of the in figure 1 brake equipment shown;

Figure 6:

a schematic front view of the swing apparatus according to the invention;

Figure 7:

a schematic side view of the in figure 6 illustrated swing apparatus;

Figure 8:

a schematic plan view of the in figure 6 illustrated swing apparatus;

Figure 9:

a schematic plan view of a detail of a further embodiment of the swing apparatus according to the invention with a mounting plate.

It is envisaged that the subassembly will have the complete brake mechanism including the swing arm (7) and will make a significant contribution to stiffening the chassis and at the same time increase the performance of the trailer. The brake mechanism disclosed here consists of the functional groups of brake calipers with tappets (3) and swing arm device for brake actuation (7), both of which are mounted on the mounting plate for the brake device (9) so that they can be mounted as a unit on the chassis of the bicycle trailer. For this purpose, a grid of holes is preferably provided in the mounting plate for mounting the fastening clamps (10), which allow a large number of different bicycle trailers to be equipped.

The brake caliper functional group consists of two oppositely movable, identical brake caliper halves with a tappet (3), which can be used both as a rim brake, as in 3 shown, and can also be designed for actuation as a disc brake. What they both have in common is that each part is bent around the wheel or brake disc (2) in the manner of pliers on one side and acts there on the outside of the brake disc or rim (12) and is designed as a ram on the other side, that of the bent side counteracts the other half of the brake caliper with the tappet (3) on the respective wheel from the inside exactly as in Figures 1 to 4 shown. This means that, in contrast to conventional brake calipers, each half of the brake caliper acts on two wheels at the same time.

It is advantageous to arrange the brake pads (13) in such a way that the centroids of the brake pads (13) on each wheel or brake disc (2) move coaxially with one another. In the 1 the brake caliper halves with the tappet (3) are shown one behind the other for better understanding of the function. Fig. 2 bis 5 reflect the actual installation position one above the other. Preferably made of square tubing, they are floating on top of each other so that they can be moved to the left and right in a bearing of the brake caliper (11). The bearings of the brake caliper (11) are expediently mounted on a grid of holes in the mounting plate (9) in order to enable variable mounting options on a large number of models. The mounting plate (9), in turn, is fastened to the tubular frame (1) of the trailer with simple fasteners (10), such as clamps or clamps.

The axis of each square tube should run through the centroid of the brake pads (13) on the tappet side. The geometric arrangement of the brake pad attachment results from this requirement in conjunction with the above-mentioned requirement for the coaxial movement of the associated brake pad centroids Figures 2 and 4 is evident. The application of these measures results in the avoidance of torsion around the common center of gravity axis of both square tubes when the brake is actuated, whereby tilting in the bearings of the brake calipers (11) is avoided. If all of the aforementioned design rules are followed, the braking axes between the two wheels will be vertically offset by one tube thickness, for example by 20 mm in the case of a twenty square tube. This problem can easily be solved by centering the brake caliper package with its common centroid axis on the middle of the passing chord of the wheel or brake disc (2).

To adapt the brake to different vehicle widths and to adjust the brake play, the length of the brake calipers with tappets (3) can be varied, e.g. as a version with telescopic tubes that can be pushed into one another with a locking option and/or with adjusting screws on the brake pad mounts.

The simplest way to actuate the brake is to use a cable with a cable sleeve (6), actuated by the swing arm (7) for brake actuation. On the brake calipers with tappets (3) there is an abutment for the cable or cable housing (4), both of which pull together against the return spring (5) and thus pinch the wheels or brake discs (2). Versions with pneumatic, hydraulic or electromagnetic actuation are also possible according to the known rules of technology. If the basic setting of the brake calipers with tappet (3) is correct, the braking effect on both wheels is the same due to their floating bearing. As an alternative to the return spring (5) or in addition to it, adjustable springs can also be attached between the brake caliper halves (3) and the bearing of the brake caliper (11), in order to center the brake calipers (3) without friction when the brake is released.

The swing arm (7) for the brake actuation is in Figures 6 to 8 shown. A rocker mechanism (7) works with less friction than conventional telescopic tube solutions, especially with high centers of gravity of the load and pitching vibrations, which results in a more sensitive response of the overrun brake. The rocker mechanism (7) has to transmit the thrust of the trailer to trigger the overrun brake, on the one hand, and to ensure the vertical and horizontal lateral guidance of the drawbar tube (8) relative to the trailer on the other. In order to be able to fulfill these tasks with a compact size, a construction as in the Figures 6 to 8 shown applied.

It consists of a fixed swingarm plate (15) which is also part of the mounting plate (9) as shown in 9 shown, can be formed, and a below this arranged, movable rocker plate (16), with a reversed position is also possible. The movable rocker plate (15) carries a device for the non-positive mounting of the drawbar (8). On the front edge of the fixed rocker plate (15) and the rear edge of the movable rocker plate (16), there is an abutment for the cable casing and cable (4), preferably designed as vertical rows of holes, in order to be able to vary the transmission ratio to optimize the braking effect.

6 shows a front view from which it can be seen that the connecting rods (18) fastened with joints (17) cross between the fixed (15) and movable (16) rocker plates. 7 shows a side view and 8 12 is a plan view showing the hinge attachment lines for the fixed (19) and movable (20) swingarm plates (15, 16). This construction withstands the torsional stress caused by the support load on an asymmetrically mounted low drawbar and keeps the trailer safely on track with easy axial mobility.

Obviously, the braking equipment formed with the brake caliper halves can also interact with other means for generating a braking force or means for actuating the brake caliper halves than the rocker apparatus described here, just as the rocker apparatus described can also interact with other wheel brakes, for example with simple, conventional rim brakes, wherein the braking force that can be generated by the swing arm does not just have to actuate a brake or braking equipment, but rather that generated by the swing arm Braking force generated can be distributed to two or more wheel brakes via cables, pneumatic, hydraulic or electromechanical means.

Reference sign

1

tubular frame

2

wheel or brake disc

3

Brake caliper half with tappet

4

Abutment for cable/cable housing

5

return spring

6

Cable with cable cover

7

swing apparatus

8th

drawbar

9

Mounting plate for braking apparatus

10

fasteners

11

Bearing of the brake caliper

12

rim

13

brake pad

14

tires

15

Fixed swingarm plate

16

Movable swingarm plate

17

joint

18

connecting rod

19

Joint attachment line fixed swingarm plate

20

Joint attachment line movable swingarm plate

Claims (13)

Braking equipment for braking a first wheel and a second wheel of a vehicle that has at least two lanes, in particular a trailer such as a bicycle trailer, with two brake caliper halves (3) that can move relative to one another and means for actuating the two brake caliper halves, characterized in that one side of one of the two brake caliper halves is formed to be guided around the first wheel or around a brake disc (2) arranged on the first wheel and to act on an outside of a rim or the brake disc of the first wheel, and the other side of one brake caliper half is designed and arranged as a tappet to act on an inside of a rim or a brake disc of the second wheel, and that one side of the other of the two caliper halves is adapted to be guided around the second wheel or around a brake disc arranged thereon and on an outside of a rim or Brake disc of the second wheel e.g u, and the other side of the other half of the brake caliper is designed and arranged as a tappet to act on the inside of a rim or brake disc of the first wheel, so that each half of the brake caliper can act on both wheels or their brake discs (2) simultaneously. Brake equipment according to Claim 1, characterized in that both halves of the brake caliper are identical in construction. Braking equipment according to Claims 1 and 2 , characterized in that the brake caliper halves (3) are mounted floating in relation to one another in fixed bearings (11). Braking equipment according to any one of the preceding claims, characterized in that the side of at least one of the half-brake calipers designed to be guided around a wheel or a brake disc is curved and in particular U-shaped. Braking equipment according to any one of the preceding claims, characterized in that the side of at least one of the half-brake calipers designed to be wound around a wheel or brake disc are exactly counteracting the plunger of the other half of the brake caliper on a rim or a brake disc. Braking equipment according to one of the preceding claims, characterized in that both halves of the brake caliper (3) are moved towards one another by means of a cable pull (6) or pneumatically or hydraulically or electromechanically. Braking equipment according to any one of the preceding claims, characterized in that the length of the brake caliper halves (3) is adjustable. Brake equipment according to one of the preceding claims, characterized in that at least one of the brake caliper halves is rod-shaped in a central area formed between the two sides and/or at least partially has a polygonal, in particular square, cross-section. Braking equipment for an overrun brake for a trailer with a drawbar, in particular for a bicycle trailer, in the form of a rocker apparatus (7) as a connecting link between drawbar (8) and trailer, characterized by a rocker plate (15) to be connected to the trailer and a movable, with the drawbar (8) connectable drawbar mount, wherein the rocker plate (15) and the drawbar mount are coupled via connecting rods (18) in such a way that the drawbar (8) can be moved axially relative to the rocker plate (15), and that an overrun brake can be activated by axial displacement the drawbar to the rocker plate (15, 16) can be triggered by a cable, pneumatically, hydraulically or electromechanically. Braking equipment according to Claim 9, characterized by a movable rocker plate (16) as a drawbar mount or as a support for the drawbar mount, the rocker plate (16) being movably connected to the connecting rods (18) with the rocker plate (15). Braking equipment according to Claim 10, characterized in that the connecting rods are arranged at an angle to one another transversely to the direction of travel and the connecting rods (18) intersect in particular transversely to the direction of travel. Braking equipment according to claim 1 or one of the claims dependent on claim 1 in combination with a braking equipment according to claim 9 or one of the claims dependent on claim 9 as part of the means for actuating the two brake caliper halves. Brake equipment according to one of the preceding claims, characterized in that all the components are arranged as an assembly unit on a mounting plate (9) with fastening elements (10) for assembly on a bicycle trailer.

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